I'd be running as fast as I could downhill to an area of thick tree cover (not those little tree clumps in the picture), wondering how I ever could have been so stupid, and vowing never to venture forth in bad weather again.

Yes, I've seen that picture. I chalked up the difference in color to potentially different times of day and angles. It never occurred to me that the lake color actually changed. I darkened my picture slightly, the original was an even lighter shade of blue.

On that same trip, we went by Pigeon Milk Spring about a mile SSW of Rocky Sea Pass on the Highline Trail. It looked pretty clear, but I had remembered it being a not too pretty shade of milky gray from a trip 20 years ago.